path: root/include/linux
diff options
authorHeiner Kallweit <hkallweit1@gmail.com>2020-03-01 21:36:09 +0100
committerDavid S. Miller <davem@davemloft.net>2020-03-01 19:04:19 -0800
commit249bc9744e165abe74ae326f43e9d70bad54c3b7 (patch)
treea26daf322f9ba04fe8052c00fca022b1cdf1a650 /include/linux
parentnet: dsa: sja1105: Don't destroy not-yet-created xmit_worker (diff)
net: phy: avoid clearing PHY interrupts twice in irq handler
On all PHY drivers that implement did_interrupt() reading the interrupt status bits clears them. This means we may loose an interrupt that is triggered between calling did_interrupt() and phy_clear_interrupt(). As part of the fix make it a requirement that did_interrupt() clears the interrupt. The Fixes tag refers to the first commit where the patch applies cleanly. Fixes: 49644e68f472 ("net: phy: add callback for custom interrupt handler to struct phy_driver") Reported-by: Michael Walle <michael@walle.cc> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/phy.h b/include/linux/phy.h
index c570e162e05e..22f5e763e894 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -557,6 +557,7 @@ struct phy_driver {
* Checks if the PHY generated an interrupt.
* For multi-PHY devices with shared PHY interrupt pin
+ * Set interrupt bits have to be cleared.
int (*did_interrupt)(struct phy_device *phydev);